Grain boundary scars and spherical crystallography

A. R. Bausch; M. J. Bowick; A. Cacciuto; A. D. Dinsmore; M. F. Hsu; D. R. Nelson; M. G. Nikolaides; A. Travesset; D. A. Weitz

doi:10.1126/science.1081160

Grain boundary scars and spherical crystallography

A. R. Bausch, M. J. Bowick, A. Cacciuto, A. D. Dinsmore, M. F. Hsu, D. R. Nelson, M. G. Nikolaides, A. Travesset, D. A. Weitz

Department of Physics

Research output: Contribution to journal › Article › peer-review

437 Scopus citations

Abstract

We describe experimental investigations of the structure of two-dimensional spherical crystals. The crystals, formed by beads self-assembled on water droplets in oil, serve as model systems for exploring very general theories about the minimum-energy configurations of particles with arbitrary repulsive interactions on curved surfaces. Above a critical system size we find that crystals develop distinctive high-angle grain boundaries, or scars, not found in planar crystals. The number of excess defects in a scar is shown to grow linearly with the dimensionless system size. The observed slope is expected to be universal, independent of the microscopic potential.

Original language	English (US)
Pages (from-to)	1716-1718
Number of pages	3
Journal	Science
Volume	299
Issue number	5613
DOIs	https://doi.org/10.1126/science.1081160
State	Published - Mar 14 2003

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abstract = "We describe experimental investigations of the structure of two-dimensional spherical crystals. The crystals, formed by beads self-assembled on water droplets in oil, serve as model systems for exploring very general theories about the minimum-energy configurations of particles with arbitrary repulsive interactions on curved surfaces. Above a critical system size we find that crystals develop distinctive high-angle grain boundaries, or scars, not found in planar crystals. The number of excess defects in a scar is shown to grow linearly with the dimensionless system size. The observed slope is expected to be universal, independent of the microscopic potential.",

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AU - Bausch, A. R.

AU - Bowick, M. J.

AU - Cacciuto, A.

AU - Dinsmore, A. D.

AU - Hsu, M. F.

AU - Nelson, D. R.

AU - Nikolaides, M. G.

AU - Travesset, A.

AU - Weitz, D. A.

PY - 2003/3/14

Y1 - 2003/3/14

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AB - We describe experimental investigations of the structure of two-dimensional spherical crystals. The crystals, formed by beads self-assembled on water droplets in oil, serve as model systems for exploring very general theories about the minimum-energy configurations of particles with arbitrary repulsive interactions on curved surfaces. Above a critical system size we find that crystals develop distinctive high-angle grain boundaries, or scars, not found in planar crystals. The number of excess defects in a scar is shown to grow linearly with the dimensionless system size. The observed slope is expected to be universal, independent of the microscopic potential.

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Grain boundary scars and spherical crystallography

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